ORDER AND JUDGMENT
CARLOS F. LUCERO, Circuit Judge.
This case has previously been before us. Oil, Chem. & Atomic Workers Int’l Union v. Conoco, Inc., 241 F.3d 1299, 1301 (10th Cir.2001). Following our remand, the district court parsed the parties claims as to the arbitrability of union grievances under several collective-bargaining agreements (“CBAs”), and referred certain issues to arbitration while holding others not arbitrable as a matter of law. We now consider cross-appeals from both Conoco, Inc. (“Conoco”) and the Oil, Chemical and Atomic Workers International Union (AFL-CIO) and its Local 5-857 (“the Union”). Exercising jurisdiction pursuant to 28 U.S.C. § 1291, we affirm in part and reverse in part.
I
Under, the terms of three separate CBAs, the Union filed numerous grievances against Conoco, challenging, inter alia, Conoco’s handling of certain job reductions at its Ponca City, Oklahoma refinery.1 Each CBA contains a provision entitled “Settlement of Grievances,” which provides:
[181]*181A grievance is a dispute or conflict between the Company and the Union as to the interpretation or application of the terms of this Agreement.
Only differences arising between the Union and the Company relating to interpretation or performance of this Agreement which cannot be adjusted by mutual agreement and have gone through the grievance procedure are arbitrable, except as otherwise provided in this Agreement.
(Appellant’s App. at 94-95.) When the parties could not settle the grievances through the initial grievance procedure outlined in the CBAs, the Union requested arbitration. Conoco refused, citing the “Management’s Rights” provision contained in each CBA, which provides:
Grievances originating under [this Management’s Rights Clause] are subject to the grievance procedure but cannot be submitted to arbitration; and no arbiter has the authority to rule on [this clause] with the exception of determination of just cause....
(Id. at 71 (emphasis added).) In each of the CBAs, this Management’s Rights Clause sets forth certain functions that are “solely the responsibility of management,” including “[h]iring, maintaining order, and discipline or discharge” and “the assignment of work subject only to other provisions of [the Agreement].” (Id. at 70 (emphasis added).) Thus, the CBAs are subject to the grievance and arbitration process in their entirety, except for grievances “originating” under the Management’s Rights Clause. Conoco refused the Union’s requests for arbitration on the theory that each of the grievances filed by the Union “originates” under the Management’s Rights Clause without impheating other terms of the CBA.
In July 1997, the Union brought suit against Conoco, seeking to compel arbitration of the grievances. In a Joint Statement as to Grievance Classifications, the parties placed the grievances into four separate categories. The first three categories of grievances relate to Conoco’s use of contract workers at its Ponca City, Oklahoma refinery, while the fourth category relates to the use of a non-bargaining-unit member to perform certain clerical work. On May 20, 1999, the district court issued an order sending ah the grievances to arbitration without determining arbitrability. Oil, Chem. & Atomic Workers Int’l Union v. Conoco, Inc., No. 97-CV-682-H, shp op. at 2 (N.D.Okla. May 20, 1999). However, the Tenth Circuit vacated and remanded this order, holding that Conoco was entitled to a ruling on the arbitrability of the Union’s grievances before being compelled to submit to arbitration. Oil, Chem. & Atomic Workers Int’l Union, 241 F.3d at 1301. On remand, the district court determined that: (1) grievances in Category One and Category Two are arbitrable, and must be submitted to arbitration; (2) the Category Three grievance is moot; and (3) the Category Four grievances are not arbitrable as a matter of law. Conoco now appeals the district court’s determination that grievances in Category One and Category Two are arbitrable; the Union, on cross-appeal, argues that grievances in Category Three and Category Four should also be sent to arbitration.
II
We review de novo the question of whether a dispute is arbitrable under a cohective-bargaining agreement. O’Connor v. R.F. Lafferty & Co., Inc., 965 F.2d 893, 901 (10th Cir.1992). In determining whether the parties have agreed to arbitrate an issue, we are guided by certain well-established rules. First, “arbitration is a matter of contract and a party cannot [182]*182be required to submit to arbitration any dispute which he has not agreed so to submit.” United Steelworkers of Am. v. Warrior & Gulf Navigation Co., 363 U.S. 574, 582, 80 S.Ct. 1347, 4 L.Ed.2d 1409 (1960). The second rule, “following] inexorably from the first,” AT & T Techs., Inc. v. Communications Workers of Am., 475 U.S. 643, 649, 106 S.Ct. 1415, 89 L.Ed.2d 648 (1986), is that “the question of arbitrability is an issue for judicial determination [u]nless the parties clearly and unmistakably provide otherwise,” Howsam v. Dean Witter Reynolds, Inc., 537 U.S. 79, 123 S.Ct. 588, 591, 154 L.Ed.2d 491 (2002) (alteration in original) (quotation omitted). Third, in reviewing the parties’ grievances, the court is not to rule on the potential merits of the underlying claims. AT & T, 475 U.S. at 649. As the Supreme Court has noted, “[w]hether ‘arguable’ or not, indeed even if it appears to the court to be frivolous, the union’s claim that the employer has violated the collective-bargaining agreement is to be decided, not by the court asked to order arbitration, but as the parties have agreed, by the arbitrator.” Id. at 649-50. Finally, there is a presumption of arbitrability, meaning that an “order to arbitrate the particular grievance should not be denied unless it may be said with positive assurance that the arbitration clause is not susceptible of an interpretation that covers the asserted dispute. Doubts should be resolved in favor of coverage.” Id. at 650 (emphasis added) (quotation omitted). “[0]nly the most forceful evidence of a purpose to exclude the claim from arbitration can prevail.” Id. at 651 (quotation omitted). This principle “recognizes the greater institutional competence of arbitrators in interpreting collective-bargaining agreements.” Id. at 650.
With these principles in mind, we consider the four categories of grievances.
Ill
The first two categories relate to Conoco’s use of contract workers at its Ponca City, Oklahoma refinery.
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ORDER AND JUDGMENT
CARLOS F. LUCERO, Circuit Judge.
This case has previously been before us. Oil, Chem. & Atomic Workers Int’l Union v. Conoco, Inc., 241 F.3d 1299, 1301 (10th Cir.2001). Following our remand, the district court parsed the parties claims as to the arbitrability of union grievances under several collective-bargaining agreements (“CBAs”), and referred certain issues to arbitration while holding others not arbitrable as a matter of law. We now consider cross-appeals from both Conoco, Inc. (“Conoco”) and the Oil, Chemical and Atomic Workers International Union (AFL-CIO) and its Local 5-857 (“the Union”). Exercising jurisdiction pursuant to 28 U.S.C. § 1291, we affirm in part and reverse in part.
I
Under, the terms of three separate CBAs, the Union filed numerous grievances against Conoco, challenging, inter alia, Conoco’s handling of certain job reductions at its Ponca City, Oklahoma refinery.1 Each CBA contains a provision entitled “Settlement of Grievances,” which provides:
[181]*181A grievance is a dispute or conflict between the Company and the Union as to the interpretation or application of the terms of this Agreement.
Only differences arising between the Union and the Company relating to interpretation or performance of this Agreement which cannot be adjusted by mutual agreement and have gone through the grievance procedure are arbitrable, except as otherwise provided in this Agreement.
(Appellant’s App. at 94-95.) When the parties could not settle the grievances through the initial grievance procedure outlined in the CBAs, the Union requested arbitration. Conoco refused, citing the “Management’s Rights” provision contained in each CBA, which provides:
Grievances originating under [this Management’s Rights Clause] are subject to the grievance procedure but cannot be submitted to arbitration; and no arbiter has the authority to rule on [this clause] with the exception of determination of just cause....
(Id. at 71 (emphasis added).) In each of the CBAs, this Management’s Rights Clause sets forth certain functions that are “solely the responsibility of management,” including “[h]iring, maintaining order, and discipline or discharge” and “the assignment of work subject only to other provisions of [the Agreement].” (Id. at 70 (emphasis added).) Thus, the CBAs are subject to the grievance and arbitration process in their entirety, except for grievances “originating” under the Management’s Rights Clause. Conoco refused the Union’s requests for arbitration on the theory that each of the grievances filed by the Union “originates” under the Management’s Rights Clause without impheating other terms of the CBA.
In July 1997, the Union brought suit against Conoco, seeking to compel arbitration of the grievances. In a Joint Statement as to Grievance Classifications, the parties placed the grievances into four separate categories. The first three categories of grievances relate to Conoco’s use of contract workers at its Ponca City, Oklahoma refinery, while the fourth category relates to the use of a non-bargaining-unit member to perform certain clerical work. On May 20, 1999, the district court issued an order sending ah the grievances to arbitration without determining arbitrability. Oil, Chem. & Atomic Workers Int’l Union v. Conoco, Inc., No. 97-CV-682-H, shp op. at 2 (N.D.Okla. May 20, 1999). However, the Tenth Circuit vacated and remanded this order, holding that Conoco was entitled to a ruling on the arbitrability of the Union’s grievances before being compelled to submit to arbitration. Oil, Chem. & Atomic Workers Int’l Union, 241 F.3d at 1301. On remand, the district court determined that: (1) grievances in Category One and Category Two are arbitrable, and must be submitted to arbitration; (2) the Category Three grievance is moot; and (3) the Category Four grievances are not arbitrable as a matter of law. Conoco now appeals the district court’s determination that grievances in Category One and Category Two are arbitrable; the Union, on cross-appeal, argues that grievances in Category Three and Category Four should also be sent to arbitration.
II
We review de novo the question of whether a dispute is arbitrable under a cohective-bargaining agreement. O’Connor v. R.F. Lafferty & Co., Inc., 965 F.2d 893, 901 (10th Cir.1992). In determining whether the parties have agreed to arbitrate an issue, we are guided by certain well-established rules. First, “arbitration is a matter of contract and a party cannot [182]*182be required to submit to arbitration any dispute which he has not agreed so to submit.” United Steelworkers of Am. v. Warrior & Gulf Navigation Co., 363 U.S. 574, 582, 80 S.Ct. 1347, 4 L.Ed.2d 1409 (1960). The second rule, “following] inexorably from the first,” AT & T Techs., Inc. v. Communications Workers of Am., 475 U.S. 643, 649, 106 S.Ct. 1415, 89 L.Ed.2d 648 (1986), is that “the question of arbitrability is an issue for judicial determination [u]nless the parties clearly and unmistakably provide otherwise,” Howsam v. Dean Witter Reynolds, Inc., 537 U.S. 79, 123 S.Ct. 588, 591, 154 L.Ed.2d 491 (2002) (alteration in original) (quotation omitted). Third, in reviewing the parties’ grievances, the court is not to rule on the potential merits of the underlying claims. AT & T, 475 U.S. at 649. As the Supreme Court has noted, “[w]hether ‘arguable’ or not, indeed even if it appears to the court to be frivolous, the union’s claim that the employer has violated the collective-bargaining agreement is to be decided, not by the court asked to order arbitration, but as the parties have agreed, by the arbitrator.” Id. at 649-50. Finally, there is a presumption of arbitrability, meaning that an “order to arbitrate the particular grievance should not be denied unless it may be said with positive assurance that the arbitration clause is not susceptible of an interpretation that covers the asserted dispute. Doubts should be resolved in favor of coverage.” Id. at 650 (emphasis added) (quotation omitted). “[0]nly the most forceful evidence of a purpose to exclude the claim from arbitration can prevail.” Id. at 651 (quotation omitted). This principle “recognizes the greater institutional competence of arbitrators in interpreting collective-bargaining agreements.” Id. at 650.
With these principles in mind, we consider the four categories of grievances.
Ill
The first two categories relate to Conoco’s use of contract workers at its Ponca City, Oklahoma refinery. Conoco argues that its use of contract workers is governed solely by Article 12 of the Refinery Agreement, the Management’s Rights Clause of this particular CBA, which gives the Union the right to transfer employees and to assign work. Because the dispute originates under the Management’s Rights Clause, Conoco argues, this issue is not arbitrable as a matter of law. In response, the Union emphasizes that under the Management’s Rights Clause, Conoco’s rights are “subject ... to other provisions [in the] Agreement.” (Appellant’s App. at 70-71.) The question presented, therefore, is whether Conoco’s right to transfer and assign work in this instance is indeed limited by “other provisions [in the] Agreement.” (Id.)
According to the Union, Article 36 of the Refinery Agreement limits Conoco’s right to contract out work in two important ways, rendering the dispute concerning Conoco’s use of contract workers arbitrable. First, Article 36 provides:
The Company agrees that it will not bring contractors into the plant to perform production or maintenance work if it will result in the lay-off of regular, full-time employees.
(Id. at 97.) In the instant case, employees were not separated from service, but transferred into the general labor pool. Concluding that the term “lay-off,” as used in the Agreement, “unequivocally requires a separation from service,” the district court found that the first limitation in Article 36 was not implicated.2 Oil, Chem. & [183]*183Atomic Workers Int’l Union v. Conoco, Inc., No. 97-CV-682-H, slip op. at 6 (N.D.Okla. Nov. 19, 2001). While the Union does not contend that there have been separations from service, it nevertheless maintains that because Union employees were given lower-paying jobs, there have been constructive lay-offs implicating Article 36. We disagree. Insofar as the term “lay-off’ is clearly used in the Refinery Agreement to indicate a separation from service, a condition not present in any of the grievances, there is no need to send this issue to arbitration. We conclude that interpretation of the first limitation in Article 36 is unnecessary and, thus, the grievances in question are not arbitrable under this provision as a matter of law.
A second limitation contained in Article 36 provides:
In addition, maintenance craft work will not be contracted as long as there are employees holding numbers in the crafts in which work is contracted working as laborers.3
(Appellant’s App. at 97.) According to Conoco’s interpretation of this provision, when a Union-represented employee is removed from his craft and transferred to a different position (including the position of laborer), that employee loses his number. If Conoco subsequently hires a contract worker to fill the slot in the craft from which the Union employee was just transferred, Article 36 is not implicated because that Union-represented employee no longer holds a number in the craft. Because Aticle 36 is not implicated, argues Conoco, there is no limitation on management’s rights under Article 12 and the matter is not arbitrable as a matter of law.
In response, the Union argues that this interpretation would render nugatory the second limitation on the use of contract workers in Article 36 because it would effectively allow Conoco to destroy the Union by replacing all Union-represented employees holding a number in a craft with contract workers. A more reasonable interpretation of Article 36, the Union argues, is that “so long as there are employees holding numbers in a particular craft, no contractor will work in that craft.” (Id. at 21.)
Because our inquiry is limited to deciding arbitrability, we do not decide which interpretation is the stronger. Under Ar-[184]*184tide 31 of the Refinery Agreement, differences arising between the Union and Conoco relating to the interpretation or performance of the Agreement (except for those disputes that “originate” under Article 12) are arbitrable. Given these competing interpretations of the second limitation in Article 36, and keeping in mind the presumption of arbitrability, AT & T, 475 U.S. at 650, we are unable to say “with positive assurance that the arbitration clause is not susceptible of an interpretation that covers the asserted dispute,” id. Thus, we conclude that the district court was correct to find that an interpretation of the second limitation in Article 36 is necessary to resolve the grievances at issue.
IV
The Category Three grievance presents precisely the same issue we considered in Categories One and Two above, with one difference: the individual involved, Virgil Palmer, is no longer employed by Conoco. This fact, coupled with the fact that the only remedy sought for Palmer was that Conoco “recognize Mr. Palmer’s seniority ranking and keep him in the transportation progression,” led the district court to conclude that the grievance is moot and therefore not arbitrable as a matter of law. Oil, Chem. & Atomic Workers Int’l Union, slip op. at 7 (N.D.Okla. Nov. 19, 2001).
On appeal, the Union argues that the issue of mootness is itself a question that should be resolved by an arbitrator. In considering whether the question of mootness is a “question of arbitrability,” Howsam, 537 U.S. at-, 123 S.Ct. at 591, we note that although “one might call any potentially dispositive gateway question a ‘question of arbitrability,’ ... for purposes of applying the interpretive rule, the phrase ‘question of arbitrability’ has a far more limited scope.” Id. at 592. For example, in Howsam, the Supreme Court held that the issue of whether the statute of limitations has run is a question for the arbitrator, notwithstanding the fact that an Article III court could have easily interpreted and applied the NASD rule in the circumstances of that case. In inventorying the issues that are not “questions of arbitrability” subject to review by the courts, i.e., time limits, notice, laches, and estoppel, the Supreme Court did not address mootness. Nevertheless, it is evident that the inquiry involved in assessing whether a statute of limitations has run (when a cause of action has accrued or expired) is akin to a mootness inquiry (when a cause of action is no longer viable) for purposes of determining questions of arbitrability.4
Furthermore, in Howsam, the Court noted that the phrase “question of arbitrability” is limited to “the kind of narrow circumstance where contracting parties would likely have expected a court to decide the gateway matter.” Id. While the Refinery Agreement does not specifically address who should decide questions of mootness, the Supreme Court has held that when faced with a broad arbitration clause, as we are in the instant case, “only the most forceful evidence of a purpose to exclude the claim from arbitration can prevail.” AT & T, 475 U.S. at 650. We can find no evidence to suggest that the parties intended, in agreeing to send nearly all grievances to arbitration, that the ques[185]*185tion of whether those grievances were moot should not also be sent to arbitration.
Given the tightly circumscribed role that the courts are assigned in determining arbitrability, and considering that arbitrators have broad equitable powers to fashion remedies, it is not for us to decide that a remedy will not be available for a particular grievance. As discussed herein, the underlying dispute regarding Article 36 presents an issue of interpretation for the arbitrator and must be sent to arbitration. While our fealty to Supreme Court precedent may stand us accused of hyper-technicality, nonetheless, we conclude that the issue of mootness is also a question for the arbitrator, and reverse the judgment of the district court on this issue.
V
Category Four contains two grievances arising under the Clerical Agreement. In the first instance, the Union challenges the posting of the position of “Yields Analyst” in the company’s Candidate Generation system on the grounds that “[t]he responsibilities listed for this position are currently performed by the represented employees in the Yields Department” and therefore must “continue to be filled by represented personnel.” (Appellant’s App. at 251.) Conoco refused to arbitrate the grievance on the grounds that the Management’s Rights portion of the Clerical Agreement, Article 16, makes clear that the deletion and creation of jobs, including the right to discontinue any part or all of the office and clerical activities, is within Conoco’s management’s rights, a fact that the Union does not contest. Thus, Conoco argues that this grievance originates solely under the Management’s Rights Clause and is not subject to arbitration.
As in the other CBAs previously discussed, the Management’s Rights provision in the Clerical Agreement is “subject ... to other provisions of this Agreement.” The Union argues that Articles 1 and 5 constitute such “other provisions” and limit Conoco’s ability to delete and create jobs under Article 16. Article 5 of the Clerical Agreement is entitled “Job Classifications and Rates and Pay,” incorporating appendices listing various job classifications with corresponding rates of pay. Article 1 of the Clerical Agreement is entitled “Recognition,” and provides:
The Company hereby recognizes the Union as the sole and exclusive representative for the purposes of collective bargaining with respect to rates of pay, wages, hours of employment, and other conditions of employment, for the employees ... UNIT: INCLUDED: All offices and clerical employees in Conoco Inc.’s Ponca City, Oklahoma, refinery. ...
(Id at 137.) Concluding that there is nothing in Articles 1 or 5 that requires interpretation such that an arbitrator is necessary to decide whether this grievance falls within the Management’s Rights article of the Clerical Agreement, the district court refused to send the Category Four grievances to arbitration. We agree with this conclusion. There is simply nothing in Articles 1 or 5 that places any limitation on Conoco’s right to create and define the Yields Analyst position. Thus, because Articles 1 and 5 are not even arguably implicated, there is nothing to interpret and the grievance cannot be submitted to arbitration as a matter of law.
The second grievance in Category Four involves an incident in which a non-Union employee prepared and distributed retirement books, a function the Union maintains is strictly clerical and can only be performed by a represented employee. The Union concedes, however, that distribution of retirement books has been per[186]*186formed by management-level employees in the past, and that, under Article 16, Conoco has the right to assign work unless other provisions in the CBA place a limitation on Conoco’s management’s rights in this context. According to the Union, however, Articles 5 and 7 represent such “other provisions” and limit Conoco’s power under Article 16 in this situation. Article 5 lists job classifications and Article 7 allows vacancies to be filled by seniority. After careful review of the parties’ arguments and the relevant articles in the CBA, we conclude that Articles 5 and 7 place no limitations on Conoco’s Management’s Rights relevant to the challenged conduct, and no interpretation by an arbitrator is required. Thus, we affirm the district court’s refusal to send this grievance to arbitration.
VI
For the foregoing reasons, the judgment of the district court is AFFIRMED in part and REVERSED in part.
This order and judgment is not binding precedent, except under the doctrines of law of the case, res judicata, and collateral estoppel. This court generally disfavors the citation of orders and judgments; nevertheless, an order and judgment may be cited under the terms and conditions of 10th Cir. R. 36.3.